2840663 has 8 divisors (see below), whose sum is σ = 3260928. Its totient is φ = 2424024.

The previous prime is 2840657. The next prime is 2840681. The reversal of 2840663 is 3660482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2840663 - 2⁴ = 2840647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070 + ... + 2612.

It is an arithmetic number, because the mean of its divisors is an integer number (407616).

2^2840663 is an apocalyptic number.

2840663 is a deficient number, since it is larger than the sum of its proper divisors (420265).

2840663 is a wasteful number, since it uses less digits than its factorization.

2840663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2840663 is about 1685.4266522160. The cubic root of 2840663 is about 141.6249941250.

The spelling of 2840663 in words is "two million, eight hundred forty thousand, six hundred sixty-three".